While the latest Beta drivers have fixed gamescope & wine-wayland issues, it appears there is some issue with color. Its always the same issue, where an HDR window output ends up Yellowed and Washed out, which I believe is a problem with color spaces.
The screenshot is from the System Shock Remake using RenoDX, which I can see fixing the exposure and recovering highlights, but colors are scuffed.
I see the same issues whether its Wine Wayland or gamescope, with Vulkan layers enabled (–hdr-enabled), gamescope options, and when watching HDR videos in Firefox nightly with the gfx.wayland.hdr option enabled.
All HDR appears to show the same kind of Yellowing & Washing out of colors.
Up to date Fedora KDE 42 with HDR & Wide color gamut enabled
Nvidia Beta drivers installed from RPMFusion Rawhide Repo